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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Estimated U.S. Emissions of Nitrogen Oxides

(million short tons)

Embedded Dataset Excel:

Dataset Excel:

table_04_46_062824.xlsx (28.14 KB)


Details may not add up to totals due to rounding in the source.


KEY: R = revised.

a Industrial processes consists of chemical and allied product manufacturing, metals processing, petroleum and related industries, and other industrial processes; and solvent utilization, storage, and transport.



U.S. Environmental Protection Agency, Air Emissions Inventories, Air Pollutant Emissions Trends Data, National Tier 1 CAPS Trends, available at as of Jun. 4, 2024.